Electric heater and cooker.



PATENTED MAY 19, 1908.

E. M. ORANDALL.

ELEGTRIG'HBATER AND COOKER.

APPLIGATION FILED JUNE 26. 1907.

Imam!" Urmdai iimess 8d i To whom it mag concern:

UNITED STATES PATENT OFFICE.

ELLA M. CRANDALL, or DOLGEVILLE, CALIFORNIA.

ELECTRIC EEATER AND COOKER;

State of California, have invented a new and useful Electric Heater and Cooker, of which the followin is'a s e'cification. v

- It is 'one o the 0 jects of this invention to provide. a device whereby electricity can be applied in a direct and convenient manner for heating li uids for the purpose of cookin or for any 0t er urpose desired; toprovi e a device of this ind which can be manufactured at a minimum expense for maximum service, which is sanitary and can be readily cleaned; which can be applied in ordinary culinary vessels, as stew-pans, pots, kettles, bowls, ]ars, and the like, and which is. ada ted for ready and convenient renewal of t e heating element in case of accident or other derangement. v

Other ob'ects and advantagesmay appear from the su joined detail description,

' The invention may be applied in various forms, and in the accom anying drawing I shall show. that form whic most desirable.

I-provide a heatinglelement in the form of a reslst'ance coil, and ouse the same in a case formed of two grooved detachable insulating plates, which, may be. made of porcelain-0r enameled sheetmetal,:or' the like, and elecktricallyconnect said coil with two terminals that are rovided with insulation so they may be.han' ed and may be immersed in water or other liquid without short circuiting. 1 The accompanying drawing illustrates the invention.

Figure 1 is a view partly in section, .ofthe appliance in use in a stew-pan whichis shown.

in vertical mid-section. .Fig. 2 is a plan view of the device partly in section, in one of the forms in which I at present contemplate embody' s ective etail of. the terminals in place.

' ragmentsof the plates areshown.

1 and 1' designate twop'lates, each grooved on one side to chamber the heating element inthe form of a resistance coil 2 which "is.

chambered in grooves 3, 3, in said plates 1,

1', respectively. Said plates may be duplicates as the grooves are arranged such manner that when'the plates are placed together, the grooves of one will correspond with those 0 theother. The plates are com- Specification of. Letters Patent. Application filed June 28, 1907'. Serial No. 381,351.

I at present deem [the .invention Fig. 3 ma per- Patented'May 19,1908.

passing throughcentral perforations 6, 6, in,

the plates to secure the two lates to ether. 7 designates parallel slots in t e perip cry of the plates-to receive terminals 8, 9, to which the conductors 10 and 11 are connected respectively. Said terminals have angularlyi bent ends 12 to-seat in the juxtaposed ends ofthe grooves 3, 3", so that when the terminals arein place in said plates they may be swung and down as ndicated in dotted lines in ig. 1 to conform to the walls of different characters. of. vessels. The slots 7 accommodate'the terminals so that they may {be swung from one to :theother side, of the disk-like bod or housing formed'by the plates,,thus a apting the appliance to be used with either plate uppermost. The two teryminals are incased in insulating material 14.

This may be readily accomplished by enamelin the terminals, QXcept where connected with'the conductors and with the resistance.

' 15 desi nates a slidihg tie and clamp for holding-t e terminals 8 and 9' in position relative" to each other. The same is provided. with a springtongue 16 which may be .plementary to each other so that when the sprti over the edge 17 of the vessel 18, thus to ho d the terminals in position relative to,

the vessel while the device is in use. a

The plates 1 and 1. 'are provided with perforations 19 leading into the resistance-contaming-channels or grooves 3, 3 to allow percolation ofliqui'd therethrough, so that the liquidmay come into contact with the heating element 2O designates" "bosses forming legs on which the undermost late may rest so as to provide .for free circu ation of liquid-underneath the plates. 7

In practical use the device will be placed in the bottom-0f the vessel in which 1t is to be used and will be covered with the liquid to' be heated. In case it is desired to use a steamer in connection with this, the same may be applied in the vessel containing the water. 21 designates a vessel for this pure pose, and 22 a cover for the same.

The plates land 1 may be made of any appropriate insulatin material, as porcelain, or enameled plates 0 metal, or the like, the purpose being to provide a simple and nonabsorbent holder for maintaining the resistance in a flat form at the bottom of theivessel in which the liquid is to be heated.

The clamp may be'made of suitable insulating material as enameled sheet metal for doub e protection against short circuiting.

What I claim is 1. An electrical heater comprising a heating element, insulated terminals connected therewith, and a flat perforated separable in sulated housing for said element.

2. Two perforated recessed insulating plates, means for det'achably connecting the two together, an electrical heating element contained in p the recesses between said plates, and insulated terminals connected with said heating element and fastened to said plates.

3. A perforated disk-like insulating body, an electrical heating element inside said body, and insulated terminals fastened to said body and connected with said element.

4. A disk-like insulating body, an electrical heating element inside said body, and insulated terminals pivotally fastened to said body and connected with said element.

5. Two complementary insulating plates each recessed on one side to receive a heatin element and each provided with paralle slots in the peripheries of the lates and communicating wlth the ends of tile grooves, insulated terminals in said slots having angularly-bent ends in said grooves, a heating element in the recesses of said plates, and means for fastening the plates together.

6. Two complementary insulating plates each provided with two eripheral slots, grooves communicating wit h said slots and forming in each plate a sinuous recess communicating at its ends with said coaxial slots, means to hold the plates together, an electrical heating element between the plates housed within said recess, and terminals pivotally mounted in said slots and grooves.

7. Two perforated com lementary insulating plates each provide on one face with a sinuous recess and also rovided with openin s communicating wit opposite ends of sa1d recess, means for fastening the plates together, an electrical heating element in said recess, and insulated terminals connected with the ends of said heating element and mounted in said 0 enings.

8. A disk-like msulating body, an electrical heating element inside said-body, ins ulated terminals pivotally fastened to said body and connected with saidheating element, and a clamp adjustably mounted on said terminals.

9. A disk-like insulatin body provided with a recess and with pe orations opening from said, recess, an electrical heating element in said recess, and insulated terminals connected with each other to form a handle,

pivoted to said body and electrically connected with said heating element. 1

10. Two perforated insulating, plates pro vided with recesses and adapted to form a housing for a heating element, a heating coil in said housing and rigid electrical conductors pivotally connected therewith.

11. Two erforated insulating disks fastened together and rovided with complementary recesses, a eating coil in said recesses,- and electrical conductors connected with the coil and adapted to form a handle for said disks.

12. Twoinsulating disks fastened together and provided with complementary recesses,

' a heating coil in said recesses and insulated electrical conductors connected with the coil, and adapted to form a handle for said disks. 13. Two insulating disks fastened together and provided with-complementary recesses, said disks being perforated along said recesses, a heatingcoil in said recesses, and electrical conductors connected with the coil. 14. Two insulating disks fastened together and provided with complementary recesses, said disks being perforated along said recesses, a heating coil in said recesses, and insulated electrical conductors connected with the coil, and adapted to form a handle for said disks.

15. Two perforated insulating plates fastened together to form a housing for an electrical heating element, an electrical heating element in said housing, insulated terminals pivotally secured to said plates and connected with said heating element.

In testimony whereof, I have hereunto set my hand at Los Angeles California this 15th day of June 1907.

ELLA M. CRANDALL.

In presence of JAMns it. TOWNSEND, M. Brennan TOWNSEND. 

